US Bridges

Sand Mines Rd. over S Fork Holston River

Fair

Smyth County, Virginia · 0.15 FR 601;0.05 to 675 · Structure no. 000000000017667

Built
1977
48 years old, rebuilt 2008
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
62 ft
2 main spans
Daily traffic
64
2022 count
Owner
State
State Highway Agency

About this bridge

Sand Mines Rd. over S Fork Holston River is a steel stringer/multi-beam or girder carrying Sand Mines Rd. over S Fork Holston River in Smyth County, Virginia. It was built in 1977 and reconstructed in 2008, so it is 48 years old, younger than the Virginia average of 50.7 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 64 vehicles a day, projected to reach 71 by 2042. The structure is 62 ft (18.9 m) long and 26 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesSand Mines Rd.
CrossesS Fork Holston River
Location0.15 FR 601;0.05 to 675
RouteCounty Highway 674
CountySmyth County
StateVirginia
Coordinates36.77703, -81.42557
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating52 US tons
Inventory rating31 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckWood or timber
Main spans2
Design loadHS 20 + Mod
Structure length62 ft (18.9 m)
Longest span36 ft (11 m)
Deck width26 ft (7.8 m)
Roadway width25 ft (7.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic64 (2022)
Projected traffic71 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Sand Mines Rd. over S Fork Holston River built?

It was built in 1977, making it 48 years old in 2025. It was reconstructed in 2008.

What condition is Sand Mines Rd. over S Fork Holston River in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in May 2024.

How much traffic does Sand Mines Rd. over S Fork Holston River carry?

About 64 vehicles per day (2022 count).

How long is Sand Mines Rd. over S Fork Holston River?

The structure is 62 ft (18.9 m) long with a longest span of 36 ft (11 m) and a deck 26 ft wide.

Who owns Sand Mines Rd. over S Fork Holston River?

It is owned by the State Highway Agency.